led matrix pic 16f84 and 4017 help me please

[Mus.me]

thank u Darrel Taylor for helping me,i have another quetion, i,m using proteus 7.5, for testing my project but it seems not working good is there any other programe to test projects?

[mackrackit]

What would be wrong with doing it the old fashion way?

A bread board, some wires and parts. Then the only thing
to worry about maybe is some stray capacitance.

[Archangel]

. . . . . .my project but it seems not working good is there any other programe to test projects?

Hello Mus.me,
The " code snippet" you posted . . . is that all of it or is there more? I ask because you made no mention of TRISA or TRISB, and those registers tell the PIC to make the ports inputs or outputs, also check your data sheet for that PIC because most of this series have open collector outputs on PortA.4 . I do not see config statements or OSC Define either.

[Mus.me]

Hello Mus.me,
The " code snippet" you posted . . . is that all of it or is there more? I ask because you made no mention of TRISA or TRISB, and those registers tell the PIC to make the ports inputs or outputs, also check your data sheet for that PIC because most of this series have open collector outputs on PortA.4 . I do not see config statements or OSC Define either.

ok joe in know to how to config them i think

define osc 4
porta = 0
trisa = 0
portb = 0

i did everythings but to debug in protues it doesnt work good ex: porta.0 isnt sending data out in proteus so im lookin if there is any other software like proteus to debug my code ,ICD doesnt include f84 and many PICs,i did pic simulator but i didnt understand it so proteus is easy but it seems not doing good job and very slow ,thank u joe for helping me ..

[wellyboot]

define osc 4
porta = 0
trisa = 0
portb = 0

this as well:
trisb = 0

porta = %10010
pulsout portb.0,150
pause 10
porta = %11001
pulsout portb.0,150
so on .......

Maybe worth changing the 'pause 10' to 'pause 1' if your display is flickering.

does your 4mhz crystal have 2 caps (18 - 22pf) between each leg and ground?
not shown on your diagram.

[Mus.me]

this as well:
trisb = 0




Maybe worth changing the 'pause 10' to 'pause 1' if your display is flickering.

does your 4mhz crystal have 2 caps (18 - 22pf) between each leg and ground?
not shown on your diagram.

thank u wellyboot for explaining, and thanks everyone trying to help ,,, i will do it and i post the result ........

[xxxxxx]

hello to everbody...so i tried to play a little with a 5x7 dotmatrix and 4017 whitch is driving the columns, the problem is that when i power down my circuit and power it up the scroll is not starting from first colum, sometimes it does, but i must to reset circuit a several times there is no clear pattern for this and the leters start to mix up, eny idea how to solwe this???


edited:

I realized that I can use the free pin uC to reset 4017